US Bridges

HWY Frontage RD over Other Relief

Fair

Suffolk County, Massachusetts · At So Boston Bypass Rd. · Structure no. B16644929DOTNBI

Built
1998
27 years old
Condition
Fair
inspected January 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
52 ft
1 main span
Daily traffic
38,534
2025 count
Owner
State
State Highway Agency

About this bridge

HWY Frontage RD over Other Relief is a prestressed concrete box beam or girders - multiple carrying HWY Frontage RD over Other Relief in Suffolk County, Massachusetts. It was built in 1998, so it is 27 years old, younger than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 38,534 vehicles a day, roughly 7% of them trucks. The structure is 52 ft (15.9 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY Frontage RD
CrossesOther Relief
LocationAt So Boston Bypass Rd.
RouteState Highway 0
CountySuffolk County
StateMassachusetts
Coordinates42.33392, -71.06376
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating68.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length52 ft (15.9 m)
Longest span49 ft (14.8 m)
Deck width63 ft (19.3 m)
Roadway width57 ft (17.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,534 (2025)
Projected traffic—
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesOther
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.7 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Frontage RD over Other Relief built?

It was built in 1998, making it 27 years old in 2025.

What condition is HWY Frontage RD over Other Relief in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2025.

How much traffic does HWY Frontage RD over Other Relief carry?

About 38,534 vehicles per day (2025 count), of which roughly 7% are trucks.

How long is HWY Frontage RD over Other Relief?

The structure is 52 ft (15.9 m) long with a longest span of 49 ft (14.8 m) and a deck 63 ft wide.

Who owns HWY Frontage RD over Other Relief?

It is owned by the State Highway Agency.